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zookeeper集群节点启动时候会读取“dataDir”目录下的id,所以必须在对应节点的“dataDir”目录下创建“myid”文件，里面填写serverid
举例：
vim conf/zoo.cfg

    tickTime=2000
    initLimit=10
    syncLimit=5
    dataDir=/data/zookeeper
    clientPort=2181
    server.1=192.168.1.128:2008:6008
    server.2=192.168.1.128:2008:6008
    server.3=192.168.1.129:2008:6008

我在这里就需要在
“192.168.1.127”节点echo "1" >/data/zookeeper/myid
“192.168.1.128”节点echo "2" >/data/zookeeper/myid
“192.168.1.129”节点echo "3" >/data/zookeeper/myid

    2016-05-14 12:01:01,079 [myid:] - INFO  [main:QuorumPeerConfig@114] - Reading configuration from: /usr/local/zookeeper/bin/../conf/zoo.cfg
    2016-05-14 12:01:01,085 [myid:] - INFO  [main:QuorumPeerConfig@316] - clientPortAddress is 0.0.0.0/0.0.0.0:2181
    2016-05-14 12:01:01,085 [myid:] - INFO  [main:QuorumPeerConfig@320] - secureClientPort is not set
    2016-05-14 12:01:01,089 [myid:] - ERROR [main:QuorumPeerMain@86] - Invalid config, exiting abnormally
    org.apache.zookeeper.server.quorum.QuorumPeerConfig$ConfigException: Error processing /usr/local/zookeeper/bin/../conf/zoo.cfg
            at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:135)
            at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:110)
            at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:79)
    Caused by: java.lang.IllegalArgumentException: myid file is missing
            at org.apache.zookeeper.server.quorum.QuorumPeerConfig.checkValidity(QuorumPeerConfig.java:637)
            at org.apache.zookeeper.server.quorum.QuorumPeerConfig.setupQuorumPeerConfig(QuorumPeerConfig.java:508)
            at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parseProperties(QuorumPeerConfig.java:348)
            at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:131)
            ... 2 more
    Invalid config, exiting abnormally

zookeeper的管理员端口被占用，需要修改配置里的“zookeeper.admin.serverPort=8080”，默认8080没有写出来，只要改为一个没使用端口即可

    2016-05-14 12:17:36,385 [myid:1] - WARN  [main:QuorumPeer@723] - Problem starting AdminServer
    org.apache.zookeeper.server.admin.AdminServer$AdminServerException: Problem starting AdminServer on address 0.0.0.0, port 8080 and command URL /commands
            at org.apache.zookeeper.server.admin.JettyAdminServer.start(JettyAdminServer.java:100)
            at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:721)
            at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:183)
            at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:120)
            at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:79)
    Caused by: java.net.BindException: Address already in use
            at sun.nio.ch.Net.bind0(Native Method)
            at sun.nio.ch.Net.bind(Net.java:444)
            at sun.nio.ch.Net.bind(Net.java:436)
            at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
            at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
            at org.mortbay.jetty.nio.SelectChannelConnector.open(SelectChannelConnector.java:216)
            at org.mortbay.jetty.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:315)
            at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
            at org.mortbay.jetty.Server.doStart(Server.java:235)
            at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
            at org.apache.zookeeper.server.admin.JettyAdminServer.start(JettyAdminServer.java:96)
            ... 4 more
    org.apache.zookeeper.server.admin.AdminServer$AdminServerException: Problem starting AdminServer on address 0.0.0.0, port 8080 and command URL /commands

zookeeper

zookeeper源码安装

00-zookeeper启动报错: myid file is missing 和 Problem starting AdminServer